Description : In a set of reactions acid yielded a compound D. The strucuture of D would be :
Last Answer : In a set of reactions acid yielded a compound D. The strucuture of D would be : A. B. C. D.
Description : The short course chemotherapy of tuberculosis has practically replaced the conventional regimens because: A. It is more efficatious B. It is less toxic C. It has yielded higher completion rates D. All of the above are correc
Last Answer : D. All of the above are correct
Description : The product P obtained through the following sequence of reactions is
Last Answer : The product P obtained through the following sequence of reactions is A. 3-chloroaniline ... C. 3-bromochlorobenzene D. 3-bromoaniline
Description : For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a (A) Batch reactor is preferred over a ... a single CSTR for high yield (C) Both (A) and (B) (D) Single CSTR is the most suitable
Last Answer : (C) Both (A) and (B)
Description : Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is `C_(8)H_(8)O`. Q undergoes cannizzaro reactions b
Last Answer : Compounds P and R upon ozonolysis produce Q and S, respectively. The molecular formula of Q and S is `C_(8) ... R , respectively is (are) A. B. C. D.
Description : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of two different oxioacids of chlorine, P and Q, r
Last Answer : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of ... `H_3PO_2` D. `SOCl_2 , PCl_5` and `H_3PO_5`
Last Answer : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give ... porchloric acids D. (D) chloric and hypochlorus acids
Description : Arrange the following carboxyl compounds in increasing order of their reactivity in nucleophilic addition reactions. Explain with proper reasoning : Benzaldehyde. p-tolualdeyde, p-nitrobenzaldehyde, Acetophenone.
Last Answer : Ans. Acetophenone is a ketone while all others are aldehydes, therefore it is least reactive. In p-tolualdehyde, there is methyl group (CH3 ) at para position w.r.t. to the ... overall order of increasing reactivity : acetophenone < p-tolualdehyde < benzaldehyde < p-nitrobenzaldehyde.
Description : Pick out the wrong statement: (A) Chemical reactions with high activation energy are very temperature sensitive (B) A flat velocity profile exists in a plug flow reactor (C) The residence ... D) Half life of a reaction increases with increased initial concentration for reaction orders more than one
Last Answer : (C) The residence time for all the elements of fluid in case of a P.F.R. need not be same
Description : In electrophilic aromatic substitution reactions a chlorine substituent __________. (a) is a deactivator and a m-director (b) is a deactivator and an o,p-director (c) is an activator and a m-director (d) is an activator and an o,p-director
Last Answer : is a deactivator and an o,p-director
Description : The following is true of mefloquine: A. P. falciparum does not develop resistance to mefloquine B. Concurrent use of β blockers with mefloquine is contraindicated C. Neuropsychiatric reactions are the most important adverse effects of mefloquine D. All of the above
Last Answer : C. Neuropsychiatric reactions are the most important adverse effects of mefloquine
Description : Choose the drug whose single oral dose affords clinical cure of uncomplicated malaria caused by chloroquine sensitive/resistant P.falciparum as well as P. vivax: A. Quinine B. Mefloquine C. Artesunate D. Proguanil
Last Answer : B. Mefloquine
Description : Sigma-Sunco has decided to introduce its new sunscreen eye drops in a limited market consisting of only two cities and closely monitor the reactions of potential customers to the product and marketing program. This ... B. Use test C. Concept test D. Test marketing E. Laboratory test.
Last Answer : D. Test marketing
Description : Sigma-Sunco has decided to introduce its new sunscreen eye drops in a limited market consisting of only two cities and closely monitor the reactions of potential customers to the product and marketing program. ... analysis B. Use test C. Concept test D. Test marketing E. Laboratory test.
Description : Identify the INCORRECT statement below regarding chemical equilibrium. A All chemical reactions are, in principle, reversible. B Equilibrium is achieved when the forward reaction rate equals the ... equilibrium constant. E Equilibrium is achieved when reactant and product concentrations are equal.
Last Answer : E Equilibrium is achieved when reactant and product concentrations are equal.
Description : Consider the following set of reactions : `CHCl_(2)COOH+NaOHrarrCHCl_(2)COONa+H_(2)O " " Delta H_(1) = - 12830` Cal. `HCl + NaOH rarr NaCl + H_(2)O "
Last Answer : Consider the following set of reactions : `CHCl_(2)COOH+NaOHrarrCHCl_(2)COONa+H_(2)O " " Delta H_(1) = - 12830 ... H^(+) + OH^(-)` is `-13680`Cal.
Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e- ... the redox equation from the standard potential of the cell and predict if the reaction is reactant favoured or product favoured. -Chemistry
Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → = Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V At cathode (reduction) : MnO-4(aq) + 8H+ ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.
Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + ... -reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry
Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V Af cathode (reduction) : MnO-4(aq) + 8H+ ( ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.
Description : Give product of the following reactions :-
Last Answer : Give product of the following reactions :-
Description : Consider the following reactions the major product (Y) of the reaction is :
Last Answer : Consider the following reactions the major product (Y) of the reaction is : A. B. C. D.
Description : The major product of the following reactions is :
Last Answer : The major product of the following reactions is : A. B. C. D.
Description : In the following reactions, the major product W is:
Last Answer : In the following reactions, the major product W is: A. B. C. D.
Description : The major product U in the following reactions is
Last Answer : The major product U in the following reactions is A. B. C. D.
Description : Which of the following reduction reactions does not give an amine as product?
Last Answer : Which of the following reduction reactions does not give an amine as product? A. `R-NO_(2) underset(" ... (2)underset(Delta)overset(Zn//NH_(4)Cl)rarr`
Description : Give the product of the following reactions:
Last Answer : Give the product of the following reactions: A. B. C. D.
Description : The product `(Y)` of the following sequence of the reactions would be
Last Answer : The product `(Y)` of the following sequence of the reactions would be A. B. C. D.
Description : In which of the following reactions correct major product is mentioned ?
Last Answer : In which of the following reactions correct major product is mentioned ? A. B. C. D.
Description : The major product (Y) of the following reactions is
Last Answer : The major product (Y) of the following reactions is A. B. C. D.
Description : What is the major product obtained from the following reactions ? `CH_(3)COCH_(2)COOH overset("heat")to` product
Last Answer : What is the major product obtained from the following reactions ? `CH_(3)COCH_(2)COOH overset("heat")to` ... -overset(OH)overset(|)(C)=CH_(2)` D.
Description : The most favourable product of the following reactions is ltbRgt
Last Answer : The most favourable product of the following reactions is ltbRgt A. I B. II C. III D. IV
Description : What is the major product obtained from the following reactions ? `HOCH_(2)overset(O)overset(||)(C)OH overset(SOCl_(2))to overset(CH_(3)OH)to`
Last Answer : What is the major product obtained from the following reactions ? `HOCH_(2)overset(O)overset(||)(C)OH overset( ... )COOCH_(3)` D. `CH_(3)COCH_(2)COOH`
Description : The product B of the following sequence of reactions is `C_(6)H_(5)CONH_(2) overset(Br_(2))underset(NaOH)toA overst(NaNO_(2)//HCl)underset(ul(" "0-5^(
Last Answer : The product B of the following sequence of reactions is `C_(6)H_(5)CONH_(2) overset(Br_(2))underset(NaOH)toA overst( ... 5^(@)C" "))toB` A. B. C. D.
Description : The product ("X") of the following sequences of reactions is
Last Answer : The product ("X") of the following sequences of reactions is A. B. C. D.
Description : The major product of the following reactions is
Last Answer : The major product of the following reactions is A. B. C. D.
Description : The major product of the following reactions sequence is
Last Answer : The major product of the following reactions sequence is A. B. C. D.
Description : In the following reactions, the product S is
Last Answer : In the following reactions, the product S is A. B. C. D.
Description : How many reactions will produce carboxylic acid, as their end product
Last Answer : How many reactions will produce carboxylic acid, as their end product
Description : Consider the following sequence of reactions The product (A) and (B) are, respectively :
Last Answer : Consider the following sequence of reactions The product (A) and (B) are, respectively : A. B. C. D.
Description : What is the principal product of the following reactions?
Last Answer : What is the principal product of the following reactions? A. B. C. D. None of these
Description : Write the product of following reactions:
Last Answer : Write the product of following reactions: A. B. C. D.
Description : Write the product of following reactions `(a) CH_3-CH_(2)-OH overset(I_(2)//KOH)to "" Ph-CH_(2)-CO-CH_(3)overset(I_(2)//KOH)to` (c) CH_(3)-underset(OH
Last Answer : Write the product of following reactions `(a) CH_3-CH_(2)-OH overset(I_(2)//KOH)to "" Ph-CH_(2)-CO- ... (OH)underset(|)(CH)-Ph overset(I_(2)//KOH)to`
Description : Consider the following sequence of reactions: Identify product C:
Last Answer : Consider the following sequence of reactions: Identify product C: A. B. C. D.
Description : Identify the product Z in the following sequence of reactions "`phenol" overset(NaOH)rarrX underset(4-7 atm, 410 K)overset(CO_(2))rarrY overset(H_(3)O
Last Answer : Identify the product Z in the following sequence of reactions "`phenol" overset(NaOH)rarrX ... Salicyladehyde C. Benzoic acid D. Salicylic acid
Description : In which of the following reactions, the product is an ether ?
Last Answer : In which of the following reactions, the product is an ether ? A. `C_(6)H_(6)+CH_(3)COC1//anhydrous A1C1_(3)` B ... )` D. `C_(2)H_(5)C1+C_(2)H_(5)ONa`